A smirk or grim smile is produced through the contraction of the Levator labii superioris muscle.... A smirk or grim smile is produced through the contraction of the Levator labii superioris muscle.... For example the Levator labii superioris muscles pull the ends of the upper lip upward during a... For example, the Levator labii superioris muscles pull the ends of the upper lip upward during a... Nerve Buccal br of facial N (VII) Nerve Buccal br of facial N (VII) Рис. G2. Мышца поднимающая верхнюю губу (Levator labii superioris) Рис. G2. Мышца, поднимающая верхнюю губу (Levator labii superioris) Рис. G3. Большая скуловая мышца (zygomaticus major) Рис. G3. Большая скуловая мышца (zygomaticus major)
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